Improvement in soft-metal seals



F. C. HAMILTON.

SOFT-METAL SEAL. No.173,946. Patented Feb. 22, 1876.

77272265565: 7 [7056228079 m AQWA W' UNITED STAT S PATENT F IcLr..

FRED o. HAMILTON, or BROOKLY EW YORK.

IMPROVEMENT m SOFT-METAL SEALS.

Specification forming part of Letters Patent No. I 73,946, dated February 22, 1876 application filed October 18, 1515.

To all whom it may concern Be it known that I, FRED (l. HAMILTON, of Brooklyn, in the county of Kings and State of New York, have invented anew anduseful Improvement in Soft-Metal Seals; and that the followingis a full, clear, and exact description of the same, referencebeing had to the I accompanying drawings, and to theletters of reference marked thereon, making a part'of this specification.

This invention isin the nature of an im provement in soft-metal seals; and the improvement consists in a soft-metal seal combined with a single-strand bindingwire, that portion of which lying within the seal being formed into a spiral, substantially as shown and described. t I

In the accompanyingsheet of drawings, Figurel is a plan or top view of w my inven tion, and Fig. 2 an end view of seal, showing orifices.

Similar letters of reference indicate like parts in the several figures.

A represents the binding or shackle wire for a soft-metal seal. This wire is composed of a single strand, and is bent in the form ofa loop when in use, the two sides of the wire being united, by means of Ta soft-metal seal, B, into which suitable orifices, a a, are formed. That portion of the wire A which it is intended to secure to the seal B is formed with spirals b b. These spirals are inserted into the orifices ac, when the sides of the seal A are compressed, which operation 1 closes the orifices a a and forces the metal of the seal between the several spirals, not only confining the seal to the shacklewire, but effectually preventing thewire from being withdrawn or detached -from the seal without cutting it, each spiral acting as a look, as it were, so that :its withdrawal from the seal is virtually impossible.

I disclaim as being original with me in this invention. whatever functions the spirals may have, broadly, as anchoring protuberances, as this latter invention is now being prosecuted by me in another prior application in interference.

her and for the purpose described.

FRED .0. HAMILTON.

Witnesses: I y

H. L. WATTENBERG, G. M. PLYMZPTON. 

